Electropolymerization of magnesium 5,15-di(n-methoxyphenyl)porphine

International audienceThe process of electroxidative polymerization of magnesium 5,15-di(N-methoxyphenyl)porphine MgP(MeOPh)(2) is studied. The presence of substituents in positions 5 and 15 of the porphine macroring makes reactive two of its four meso positions, which allows new bonds to be formed only in the opposite positions 10 and 20. As a result, the process of electropolymerization of this substituted monomer at its oxidation can produce only linear chains, in contrast to unsubstituted magnesium porphine MgP for which the polymer structure can both be linear and contain zigzag and/or cruciform fragments

Electrochemical synthesis of cobalt polyporphine films

International audienceA method for modification of the inert electrode surface with an electroactive polymeric film containing the CoN4 catalytic site has been suggested and approved. The described approach affords the maximal content of the metal porphine moiety per unit weight of the coating. The classical method of introduction of an ion into the porphine macrocycle has been replaced by electrochemical polarization of an electrode with a metallated film in a dilute solution. The metalation efficiency has been demonstrated by the presence of changes in the current-voltage and spectral characteristics of the resulting polymeric films of the unsubstituted porphine pH(2)P and cobalt polyporphine pCoP